CIRCUIT DESCRIPTION:HSD3 supplies battery voltage to PCS3 via wire 131. HSD3 is continuously on during normal operation except during brief circuit tests. The TCM regulates control current to the solenoids by switching the appropriate low side driver on and off. DTC P2686 indicates the TCM has detected greater than or equal to a calibrated voltage in the HSD3 circuit when HSD3 is off during TCM initialization. This indicates a short to battery exists on the high side circuit 131. ACTION TAKEN WHEN THE DTC SETS:When the DTC P2686 is active, the following conditions occur:1. All ranges will be available, but...

CIRCUIT DESCRIPTION:PCS1 is used to control oncoming, off-going, and holding pressure in any one of five clutches. This solenoid is referred to as Pressure Proportional to Current (PPC) since the output hydraulic pressure supplied by this solenoid is proportional to the controlled current command. The TCM uses information from the turbine and output speed sensors to detect if a clutch is slipping. The clutch being controlled by PCS1 varies depending on the shift that is being completed. DTC P2723 sets when the TCM detects an incorrect oncoming ratio (range to range) for an accumulated number of occurrences. ACTION TAKEN WHEN...

CIRCUIT DESCRIPTION:PCS1 is used to control oncoming, off-going, and holding pressure in any one of five clutches. This solenoid is referred to as Pressure Proportional to Current (PPC) since the output hydraulic pressure supplied by this solenoid is proportional to the controlled current command. The TCM uses information from the turbine and output speed sensors to detect if a clutch is in a tie-up condition or 3 clutches are applied. The clutch being controlled by PCS1 varies depending on the shift. DTC P2724 sets when the TCM detects an incorrect range to range ratio for an accumulated number of occurrences....

CIRCUIT DESCRIPTION:PCPS1 is a Pressure Proportional to Current (PPC) solenoid used to control oncoming and off-going and holding pressure to any one of five clutches. The TCM sends control current to PCS1 from High Side Driver 1 (HSD1) via wire 111. HSD1 is continuously on unless the TCM detects a fault condition. The TCM regulates the amount of current to PCS1 by switching the low side driver on and off. Wire 155 completes the circuit between PCS1 and its low side driver. DTC P2727 indicates that the TCM processor has detected an open condition in the electrical circuit. The open...

CIRCUIT DESCRIPTION:PCPS1 is a Pressure Proportional to Current (PPC) solenoid used to control oncoming, off-going and holding pressure to any one of five clutches. The TCM sends control current to PCS1 from High Side Driver 1 (HSD1) via wire 111. HSD1 is continuously on unless the TCM detects a fault condition. The TCM regulates the amount of current to PCS1 by switching the low side driver on and off. Wire 155 completes the circuit between PCS1 and its low side driver. DTC P2729 indicates that the TCM processor has detected a short-to-ground condition in the low side of the electrical...